Advanced Endoscopic Treatment for Early Colorectal Cancers - Traction Assisted Endoscopic Submucosal Dissection for Colorectal Tumors -

抄録

　Colorectal cancer (CRC) is one of the most common causes of cancer-related death worldwide. And the incidence rates of CRC have been increasing in Japan. Screening colonoscopy is effective to decrease the incidence and mortality of CRC. Colonoscopy can be used to detect and remove precancerous polyps and early stage cancers. Although snare polypectomy and endoscopic mucosal resection (EMR) is a simple technic, sometimes it is difficult to remove the lesions 20 mm or more in diameter. Endoscopic submucosal dissection (ESD) was developed as a method for resection of large superficial gastrointestinal tumors. However, technical difficulties associated with ESD in the colorectum make it less widely applied in the treatment of tumors. To address this difficulty, we designed a new traction device, called the S-O clip and reported previously. By using this device, visibility of the submucosal layer becomes clear which makes the procedure easy and safe. Mean procedure time of ESD is significantly shorter, and it is easy to use at any location. ESD using traction device has been widely used in Japan, and it might become a worldwide standard method for removing of large superficial gastrointestinal tumors in the near future.